CN102340983A - 连续的圆形打包机加压带以及其制造方法 - Google Patents

连续的圆形打包机加压带以及其制造方法 Download PDF

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CN102340983A
CN102340983A CN2010800108410A CN201080010841A CN102340983A CN 102340983 A CN102340983 A CN 102340983A CN 2010800108410 A CN2010800108410 A CN 2010800108410A CN 201080010841 A CN201080010841 A CN 201080010841A CN 102340983 A CN102340983 A CN 102340983A
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卡斯滕·贝伦斯
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    • B65G15/32—Belts or like endless load-carriers made of rubber or plastics
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    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F15/00—Baling presses for straw, hay or the like
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    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
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Abstract

本发明涉及一种连续的圆形橡胶的打包机加压带，它包括一个嵌入的芯层，该芯层由一个增强层制成，该增强层具有至少两个叠加的织物层。所述这些织物层由至少两个单独的、叠加的织物片层(6，7，8)组成。每个织物片层的末端彼此不会从边到边地重叠。交汇点(11，13，15)被以分布的方式安排在加压带的周边。

Description

连续的圆形打包机加压带以及其制造方法
技术领域
本发明涉及一种根据专利权利要求1的前序部分所述的连续的、圆形打包机加压带。
背景技术
DE 102 43 727 C1公开了一种圆形的打包机加压带，该加压带的增强的织物在橡胶覆盖片之间被嵌入，是由一个单个的涂胶的织物片缠绕的。作为缠绕的结果，取决于缠绕的数目织物片形成了彼此上下叠放环圆周地安放的两个或多个织物层。将一个具有小厚度的涂胶纤维片缠绕在所提供的圆形的打包机加压带的环圆周长上，直到达到所设想的打包机加压带的织物增强层的数目，其结果是立即得到一种连续的织物带。所述织物带可以包含两个或多个织物层。
将所缠绕的织物片的两个末端相对于该片的纵向倾斜地切割并且将这两个末端在这些片的末端以粘附的方式连接，而在每种情况下不会与该缠绕物的一外侧上的织物缠绕层彼此重叠。将多个覆盖条定位在切断、粘附的末端上。内部覆盖条可以通过手动来定位。这些覆盖条优选地具有与这些所切断的片末端一样的倾斜角度。
一方面被附接到这些片末端上的并且另一方面被附接到织物粘附剂上的这些覆盖条由以片的形式的织物(例如以片的形式的聚酰胺织物)组成。覆盖织物的开放的片结构允许将有待连接的织物片的橡胶层连接到被定位到其上的外部橡胶覆盖片上。
在将下和上橡胶覆盖片随后定位在该连续的织物缠绕物(这是织物芯层)上后，将所制造的或组装的连续的带毛坯硬化。在这个背景下，将橡胶覆盖片连接到所缠绕的织物芯层(经常也被叫做骨架层一词)上。这产生了一个连续缠绕的打包机加压带，它已经在使用中被证明是有利的。
然而，这种圆形的打包机加压带具有一个连接区域，该区域由片末端限定并且具有减少由于弯曲循环的耐久性的作用，这些弯曲循环在此种圆形打包机加压带的操作的过程中出现的。这种骨架层偏移出了连接区域内的水平载荷平面并且因此在织物带的末端区域内受到附加的弯曲载荷和附加的伸展。
在织物带的末端的区域内，在连接区域内出现了一个凹口。在动态载荷之下，所述凹口产生了将橡胶粘附必须承受的峰值应力。其结果是，就材料而言将橡胶粘附的要求主要由连接的构型所确定，并且在一个给定的经受更小荷载的构型中，可以实现相当可观的、有可能的在材料质量和加热时间以及运行通过时间方面的节约。
考虑到两个或三个缠绕物或层的一个相对低的缠绕数目，在该连接区域出现了相对于实际的芯层厚度相当可观的厚度增加。这也导致了凹口敏感性的增加。该连接的动态耐疲劳强度对于许多应用来说不是足够的。
DE 698 30 206 T2(EP 1 175 358 B1)披露了一种运输带，该带具有一个增强的芯层(骨架层)，该芯层由三种织物层构成。粘附橡胶层被安排在三个织物层之间，这三个织物层彼此上下叠放。这两个外部织物层由外部橡胶覆盖片覆盖。将所固化的带材料在一个特定工作步骤中并且使用一种特定的方法切割成一定长度之后，产生出一种必须制成连续连接的带材料以便产生一条连续的运输带。在此背景下，主要用一种钩连接将这些片的末端连接一起。
发明内容
本发明是基于提供在开始说明的一种连续的圆形打包机加压带的类型的目的，该加压带的不同之处在于在载荷下的更高水平的稳定性以及更长的寿命，并且能够更有成本效益地生产。
该目的根据本发明来实现，其中骨架层由至少两个单独的织物片层来组成的，这两个织物片层彼此上下叠放，其中每个织物片层的两个末端彼此低靠并且彼此不重叠，并且其中该单独的织物片层的对接点被安置为分布在该连续带结构的圆周上。
本发明提供了一种圆形的打包机加压带，其增强的织物(骨架层)没有被缠绕，而是其增强的织物是由多个单独的织物片层组成的，将这些织物片层切割成该连续带的预定的圆周长度并且将这些织物片层的末端安置为抵靠的方式或在它们的末端面之间彼此相对一个小的距离，而没有任何互相的重叠。这些单独的织物片层的对接点被安排为分布在此处的带结构的圆周上，其结果是代表连续带的轻微减弱的织物连接点没有集中在连续带中的一个单一连接点处。
在本发明的一个有利的改进中，骨架层的织物片层由不同类型的织物组成。不同类型织物的组合使之有可能制造在其截面上具有不同拉伸载荷承载特性的骨架层。例如，可以将高度弹性类型的织物用在外部区域中，这种类型的织物在中性相(neutral phase)的区域中与低伸长率的织物层邻接。
在本发明的一个进一步有利的改进中，织物片层由具有不同机械特性的织物类型组成。
本发明的一个有利的改进的特征在于权利要求5。在连续皮带的圆周上的三个对接点的均匀分布导致一个低的弯曲循环载荷并且由于在该带的全长上的内摩擦因此导致了一个相关的、相对低的热量。
在本发明的进一步有利的改进中，将外部和内部织物片层的对接点以粘附方式通过在对应的、临近的橡胶覆盖片的方向上以片的形式覆盖织物覆盖。
本发明还涉及用于产生一种权利要求1至6之一所述的圆形打包机加压带的方法，其特征在于以下方法步骤：
-将至少两个织物片层切割成定长，其方式为使得其与有待产生的无末端的圆形打包机加压带的环圆周长匹配，
-这些织物片层彼此上下叠放，其中这些对接点环圆周地偏置，
-定位一个内部和外部橡胶覆盖片，并且
-将所构成的连续带毛坯固化。
此外，在将内部和外部橡胶覆盖片应用并且将全部的连续带毛坯固化之前，有可能在骨架层的暴露的对接点上定位由片织物构成的覆盖条。
附图说明
参考附图将更详细地说明本发明的一个示例性实施方案。
附图标记说明
2内部橡胶覆盖片
3外部橡胶覆盖片
6外部织物片层
7中央织物片层
8内部织物片层
11对接点
12覆盖条
13对接点
14覆盖条
15对接点
具体实施方式
在图中展示的圆形的打包机加压带具有一个内部橡胶覆盖片2以及一个外部橡胶覆盖片3。一个织物增强结构(称为一个骨架层)由三个单独的织物片层6，7，和8构成(这些织物片层被安排为彼此上下叠放)，并且被安排在这两个橡胶覆盖片2和3之间。将这些织物片层6，7，和8涂胶，即：将对应的织物在涂覆过程或压延过程中与粘附橡胶一起刮涂。
当在圆形打包机加压带的环圆周之上观看时，每个织物片层6，7，和8的末端被安排为在每种情况下以120角度均匀分布。在此背景下，每个织物片层6，7，和8的末端彼此对应抵靠，即被安置为彼此与它们的末端面相对并且不重叠。粘附橡胶在这些末端之间存在。
将外部织物片层6的对接点11用一个覆盖条12朝向外部覆盖片3覆盖。将置于内部的织物片8的对接点13也用由片织物构成的一个覆盖条14朝向内部覆盖片2覆盖。
中央织物片层7的对接点15不具有一个覆盖织物，因为上和下织物片层6和8对应地覆盖了中央织物片层7的对接点15。
中央织物片层7由一种EP织物构成。这种EP织物具有两种材料聚酯和聚酰胺，其中聚酯被安排为织物的经纱并且聚酰胺被安排为纬纱。内部和外部织物片层6和8对应地由一种PE织物(聚酰胺/聚酯)构成。不同类型织物的选择使之有可能用于带制造，以有利地影响连续带的机械特性。中央EP织物7具有一个低伸长特性，这对连续带的中性纤维具有正面的影响。高伸长率的PE织物6和8允许在操作过程中将可允许的弯曲半径减少并且允许使用相对小的滚筒直径，同时中央EP织物增加了介电强度。

Claims (7)

1.一种由橡胶状的材料构成的连续的圆形打包机加压带，它具有一个嵌入的芯层，该芯层由增强的织物构成并且具有彼此上下叠放的至少两个织物层，其特征在于，该芯层(骨架层)由至少两个单独的织物片层(6，7，8)构成，这些片层是彼此上下叠放的，其中每个织物片层的两个末端彼此抵靠并且不会彼此重叠，并且其中这些单独的织物片层(6，7，和8)的对接点(11，13，15)被安排为分布在该加压带的环圆周之上。
2.如权利要求1所述的连续的圆形打包机加压带，其特征在于这些织物片层(6，7，8)是由不同类型的织物构成的。
3.如权利要求1所述的连续的圆形打包机加压带，其特征在于这些织物片层(6，7，8)是由具有不同机械特性的类型的织物构成的。
4.如权利要求1所述的连续的圆形打包机加压带，其特征在于这些织物片层(6，7，8)是由不同织物材料构成的。
5.如权利要求1所述的连续的圆形打包机加压带，其特征在于该骨架层由三个织物片层(6，7，8)构成，其对接点(11，13，15)被安排为在该连续的圆形打包机加压带的圆周上彼此相对以120分布。
6.如权利要求1至5之一所述的连续的圆形打包机加压带，其特征在于该对应的橡胶覆盖片(2和3，对应地)的对应的内部和外部织物片层(6和8，对应地)的对接点(11，13)由一个覆盖条(12，14)来覆盖，该覆盖条由开放的片制成。
7.如以上权利要求所述的一种用于制造连续的圆形打包机加压带的方法，其特征在于以下方法步骤：
-将至少两个织物片层切割为定长，其方式为使得其与有待产生的无末端的圆形打包机加压带的环圆周长匹配，
-将这些织物片层彼此上下叠放，同时环圆周地偏置这些对接点(11，13，15)，
-布置一个内部以及一个外部橡胶覆盖片(2，3)，并且
-将所构造的连续带毛坯固化。
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